Add HAVE_FSTAB_H checks in CMake

fstab.h does not exist on musl.
See: !16 (comment 323616)



Signed-off-by: Alfred Persson Forsberg <cat@catcream.org>

cmake/modules/ConfigureChecks.cmake

@@ -10,5 +10,6 @@ check_function_exists(stat64 HAVE_STAT64)
 check_include_files(sys/vfs.h HAVE_SYS_VFS_H)
 check_include_files(sys/statvfs.h HAVE_SYS_STATVFS_H)
 check_include_files(byteswap.h HAVE_BYTESWAP_H)
+check_include_files(fstab.h HAVE_FSTAB_H)
 
 test_big_endian(WORDS_BIGENDIAN)

config-k3b.h.cmake

@@ -26,3 +26,5 @@
 
 #cmakedefine HAVE_ICONV
 #cmakedefine ICONV_SECOND_ARGUMENT_IS_CONST
+
+#cmakedefine HAVE_FSTAB_H